In one of our installation sites we are having a huge problem with 2.4 Ghz band (5 Ghz works perfectly) “435G installation 3 compex radio cards one 5 ghz two 2.4ghz. circular polarization antennas used for 2.4 ghz” inssider shows 60Dbm signal strenght but in mikrotik registeration table signal is 60dBm for a minute or so, after 60 to 90 seconds signal reduced to -80,-85dBm on both channels.
When this happens, devices see wireless with full strenght but unable to start any data communication to AP but, inssider still shows -60dBm signal strenght contradictory to microtiks registeration table.
Any ideas why this is happenning, and how to fix it?
Have you tried using a Routerboard for each radio card?
I use integrated antenna’s which I have manually applied RF screening,
From what you are saying it could a faulty antenna/lead/radio card/board but having 3 radio cards onto 1 board just complicates the fault finding, with as i suggest 3 boards/radio cards/antennas just power down each one until you isolate the source.
Problem affects only 2.4ghz radios there is also unusually high activity last activity timer issue present i tried every modulation mimo seting none of them has any affect on the problem.
I also suspect antenna cable but inssider shows 50-60 dBm strenght while mikrotik shows 80-85 dBm in registeration table this bugs me and point to interferance issue. I wil test enviroment with our survey device today.
By the way upgrading from 6.3 to 6.4 Really helped me for know clients are able to make data transmission, more less.